I am wondering if it "hurts" me to swallow the green phlegm (sputum) that is associated with an infection.

HI! I don't think it would. But there are lots of smarter people in here that know things medically, I mean that are smarter then I about illness, *Thank God* for them and this board and the mods who keep it clean and safe. They would know better then I. I am sorry I couldn't be more of help.
I hope you get to feeling better. ((((gentle hugs)))
Ms N.D. :angel:
p.s. I have swallowed and spited out the fleghm and for me it's better then swallowing it but I know when your that ill - well I understand- don't feel like trying to get to a trash can.
Please, just take care and get well soon.

I always spit, given the option...I think it's bettter for you to just get that stuff out, and not swallow it again.

When I have a problem with phlegm or sinus drainage, I spit into a tissue. I keep plenty in my car and at work and in my handbag so I don't ever have to swallow it. I think it is meant to be eliminated rather than re-introduced into the body thru the digestive system.